JPS637996B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transporting and installing a ground-mounted package type power generation equipment that can be transported by floating.

Traditionally, the construction of a thermal power plant starts with civil engineering work at the power plant construction site, then constructs the foundation for the turbine generator, constructs the turbine building, constructs the boiler steel frame, raises the boiler drum, and installs each piece of equipment. The main components were being installed in line with the progress of civil engineering and turbine building construction. At sites with poor local installation conditions, these installation works require a long period of time.
And it has a big impact on power plant construction prices.
Furthermore, it is important to transport and bring in each element of the power plant's component equipment in accordance with the installation period, which increases transportation costs. In particular, securing skilled engineers is a problem for power plants built in underdeveloped areas. In contrast, recently, power plant components such as boilers, turbines, generators, transformers, and their auxiliary equipment, as well as the turbine building, have been installed on a floatable platform, and manufactured and assembled in one huge package in a factory. , this package was transported offshore to near the power plant construction site by a submersible barge.
The vessel will be transported in one piece using a waterway such as a river, towed to a pre-prepared installation site where basic civil engineering work has been completed, and placed on the ground by pouring water into the ballast tank installed on the above-mentioned platform.After backfilling the surrounding area, A package-type power generation plant system is being considered, which greatly shortens the on-site installation period by connecting to electricity, water, fuel equipment, etc. outside the package, and allows the production of power generation equipment with sufficient quality control within the factory. ing.

The package type power generation equipment will be explained below using the drawings. Figure 1 is a partially cutaway plan view, Figure 2 is a sectional view (side view) taken along the straight line in Figure 1, and Figure 3 is a cross-sectional view (side view) taken along the straight line in Figure 1.
The figure is a cross-sectional view (front view) taken along the straight line - in Figure 1.
It is. In the figure, reference numeral 1 denotes a ship's platform, which has a ballast tank 1' and is manufactured in a dock in a factory like a normal ship. Main equipment such as generator 4, transformers 5, 6, 7, etc., as well as their auxiliary equipment such as forced draft fan 8, chimney 9, and condenser 1
0, power plant including circulating water pump 11, diarerator 12, compressor equipment 13, water supply pump equipment 14, hydrogen gas generator 15, storage battery equipment 16, control room 17, crane and hoist equipment 18, emergency power generation equipment 19, etc. Most of the component equipment is installed and configured as one huge power generation package P. Reference numeral 20 in the figure is a turbine generator building for protecting these devices. Each of these devices constituting the power generation package is manufactured in a factory in a short period of time under strict control, and then assembled and mounted on the ship's platform 1. FIG. 4 is a diagram showing a state in which the power generation package P is transported on water. In the figure, P is the power generation package, and B is a submersible purge for mounting the power generation package P. Further, T is a towing boat for towing the submersible barge B, and S is a waterway, such as the sea. In this way, the power generation package is towed close to the power plant construction site by the towing boat T. In this way, in a packaged power generation plant, the power generation plant equipment and the building housing it can be manufactured and assembled all at once at the manufacturer's desired location, and can be installed anywhere in the world.

Conventional transportation, landing, and installation methods will be explained using FIG. 5. In the figure, SB is the coastline, and C is the area extending from the sea beyond the coastline SB to the planned installation location PY.The water depth is deeper than the planned installation location PY, and foundation work will be carried out at the planned installation location PY. has been done. The planned installation location PY is for 4 sets of packages as an example. The package P floating on the sea is transported by the towing vessel T as shown in Figure 5.
1, T2, and T3 to near the entrance of the moat C, and then pulled into the moat C by winches W1 to W4 installed on land as shown in FIGS. 6 and 7. Figures 8 to 10 each show a cross section taken along the broken line
FIG. 2 is a diagram illustrating how to install the first unit at the installation location in the PY. In the figure, HWL and
LWL is the high water level and low water level at high tide and low tide, respectively. The pack cage P is pulled into the deep ditch to the position shown in Figure 7, regardless of the tide, and if this is low tide, wait for high tide and use a winch (not shown) to pull the pack cage P further.
is pulled in to the position Q indicated by the dashed-dotted line at the planned installation location PY shown in FIG. 7, and furthermore, during high tide, the package P is pulled to the first unit installation location R indicated by the broken line. Figure 8 shows the state in which the package P is pulled into the trench C at low tide, and Figure 9 shows the state in which the package P is pulled into the intended installation position after waiting for high tide. The package P, which has been drawn to the target position in this manner, sinks by introducing water into the ballast tank provided on the ship's platform, and is placed on a pre-constructed foundation as shown in FIG. 10. When the second to fourth units were placed on the ground in the same manner, the area around the trench C provided for towing and the planned installation location PY was filled in, and the installation of the power generation package P was completed.

However, if the above method is adopted, the digging work for the power plant construction site and the foundation work to install the power generation package are large-scale work, and it is not only necessary to secure workers, but also to reduce the power plant construction cost. This results in a large proportion of children sleeping. In particular, the drilling work at the planned installation site for transporting and installing the power generation package is a large part of the on-site civil engineering work, and the amount of drilling work immediately increases the power plant construction cost. It is proportional to the size of . It is the mission of package-type power generation equipment to construct a power plant in a short period of time and economically, and it is also a major factor that determines the success or failure of package-type power generation equipment. Therefore, reducing the on-site civil engineering work, especially the digging work, was a major factor in the construction of the power plant, and there was a strong demand for solutions.

In view of the above-mentioned problems, it is an object of the present invention to provide a method for transporting and installing package-type power generation equipment that minimizes on-site civil engineering work, particularly digging work, has a short delivery time, and is economical. Therefore, a surface-mounted power generation package that can be transported by floating is mounted on a submersible barge and transported in the sea area near the planned installation site.
The generator package is unloaded from a transportation barge, floated to the surface under its own power, and then towed by a tugboat to a pool set up adjacent to the planned installation site.As an auxiliary means, a balloon, such as an airship, is used to buoy the power generating package cage. The structure is such that the water line of the power generation package is raised and moved, and then installed after landing on the floor.

An embodiment of the present invention will be described below with reference to FIGS. 11 to 13.
This will be explained in detail using the drawings shown in the figures. Figure 11 is a side view of the airship attached to the power generation package as an auxiliary means for moving the power generation package P to the planned installation location, and Figure 12 is its plan view.
Figure 3 is a diagram for explaining the difference in the amount of drilling work for the power generation package when an airship is used and when an airship is not used to move it to the planned installation location. In the figure, 21 is the airship, 22 is the wire connecting the airship 21 and the power generation package P, CB is the foundation for installing the power generation package, _H1 is the conventional drilling depth, and _H2 is the depth when using the airship. drilling depth,
Hb is the thickness of the foundation CB for installing the power generation package, Hc is the clearance between the foundation CB and the power generation package P, Hd ₁ is the stuttering of the conventional power generation package P, and Hd ₂ is the power generation when using an airship. The hydration of package P is shown respectively. In addition, in FIG. 13, the solid line indicates the movement of the conventional power generation package P,
The dash-dotted line shows the state when an airship is used.

As mentioned above, the power generation package P itself is manufactured in a strictly controlled domestic factory based on an appropriate equipment layout plan. The completed power generation package P is loaded onto a submersible transport barge B, transported, and unloaded from the transport barge B in the sea or water area near the planned installation site. After the power generation package P is floated by itself, it is towed by a tugboat to a pool provided adjacent to the planned installation location. Furthermore, when moving to the final planned installation location, we will have you pull it from land using a winch, etc.
As an auxiliary means, an airship provides buoyancy to the power generation package P. Since the power generation package P is buoyant on its own and is further given buoyancy by the airship, its water intake is shallower than when the airship is not used. After moving safely and quickly, place it on the ground, restore the surrounding area, and connect it to the outside (electrical, electrical, etc.).
If you connect it to water, fuel equipment, etc., you can immediately generate electricity as a packaged power generation facility.

An example of movement when an airship is used as one of the auxiliary means will be described in detail below using FIG. 13. First, the dimensions of the power generation package P are determined by the length
90m, width 35m, berth thickness 5m, total weight.
If the weight is 10,000 tons and the specific gravity of water is 1.025, the water intake Hd of the power generation package P can be found using the following formula.

Hd = Total weight - Auxiliary buoyancy / Length x Width x Specific gravity...(1
) Here, by substituting the above values into equation (1), when moving the power generation package P using the conventional method, the swamp Hd ₁ is the only buoyant force due to water, so Hd ₁ = 10000-0 /90×35×1.025≒3.1m.

Furthermore, a clearance Hc is required between the base CB and the base CB for safe retraction and movement. Now the basics
The thickness of CB is Hb, and the clearance required for movement is
If Hc is the required depth H of the civil engineering work required to install the power generation package, that is, the drilling work, the depth H is determined by the following formula.

Drilling depth H = Irrigation Hd + Clearance Hc + Foundation thickness Hb ... (2) Here, the clearance Hc required for movement is 1
m, and the foundation thickness Hb is 0.4 m, and the depth H ₁ of drilling using the conventional method is found: H ₁ = 3.1 m + 1.0 m + 0.4 m = 4.5 m In other words, the hole is 4.5 m below the water surface. Excavation work (civil engineering work) will be required.

Based on the same idea, the foundation thickness Hd (Hd=0.4
m), clearance Hc (while maintaining Hc = 1.0m,
When calculating the case of moving using an airship, first, the buoyancy force per airship is 100 tons.
In this case, if four units give buoyancy to the power generation package P as shown in Figure 12, the overall
A buoyancy of 400 tons can be obtained. Based on this, the above (1)
Using the formula to find the drainage Hd ₂ , Hd ₂ = 10000−400/90×35×1.025≒3m Also, substituting it into equation (2) to find the depth of drilling _{H2, H2} = 3.0m + 1.0m + 0.4m = 0.4m In other words, if the power generation package P is moved using four airships with a buoyancy of 100 tons, it will be 4.4m.
This means that the hole drilling depth will be sufficient.

When an airship is used as an auxiliary means of transportation,
The difference in drilling depth H from the conventional method when not using it is H = H ₁ - _{H 2} = 4.5m - 4.4m = 0.1m In other words, when using an airship, the drilling depth is 0.1m less. I'll try it.

Also, if this is considered in terms of the total volume of the power plant installation location, it will be 90m x 35m x 0.1m = 315m ³ per power generation package, for example, in a package type power plant with 4 power generation packages installed, 315m ³ × 4 = The area will be ^1260m3 . This has a loading capacity of 10 m ³ (length 5 m, width 2
m, height 1m) when converted using a tank car.
Equivalent to 126 cars.

The greater the buoyancy of the airship, and the more airships are used, the larger the volume will be, which will lower the cost of power plant construction and shorten the construction period.

In the present invention, an airship is used as an auxiliary means to move the power generation package, and the entire power generation package is not lifted up.

In addition, not only airships but also hot air balloons can be used as one of the auxiliary means, and similar effects can be expected.
This can be sufficiently inferred from the present invention.

As explained above, by using the present invention, it is possible to significantly reduce the amount of on-site civil engineering work, such as reducing the amount of excavation at the planned installation site of the power plant, and it is possible to construct the power plant within a short period of time and economically. It has the effect of forcing people to build.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway sectional view of the power generation package assembled on the ship's platform, and Figure 2 is a straight line from Figure 1.
3 is a sectional (front) view taken along the straight line - in FIG. 1, FIG. 4 is a diagram for explaining an example of transportation of the power generation package, and FIGS. 5 to 10. 11 to 13 are diagrams for explaining a conventional method for installing a power generation package on the floor, and FIGS. 11 to 13 show a method for transporting and installing a power generation package when the airship of the present invention is used as an auxiliary means of transportation (movement). It is a figure for explaining. 1...Ship, 1'...Ballast tank, 2...
Boiler, 3... Turbine, 4... Generator, 21
...Airship, 22...Wire, P...Power generation package, B...Transportation barge.

Claims (1)

[Claims] 1 Transport the ground-mounted package-type power generation equipment that can be transported by floating on a submersible transport purge,
The cargo will be unloaded from a transport barge in the sea area near the planned installation site, floated under its own power, and towed by a tugboat to a ditch built adjacent to the planned installation site.A balloon will be used as an auxiliary means for movement to the final planned site. A method for transporting and installing package-type power generation equipment, characterized in that the package-type power generation equipment is hoisted, the water line of the power generation equipment is raised, moved, and placed on the floor for installation.